MAP 32— RANGE OF THE BOG-LEMMINGS. 

 S^naptomys borealis (Richardson). 



(All the North American species are included.) 



This map is diagrammatic and provisional. Actual records of ioreaiis and dalU only are spotted. These are from Preble's Reports 

 (Faunas 22 and 27), W. H. Osgood (Faunas 21 and 24), and Richardson. 



In general the map is founded on records by J. Richardson, E. A. Preble, W. H. Osgood, C. Hart Merriam, J. A. Allen, S. N. Rhnads, 

 O. Bangs, W. H. Dall, G. S. MiUer, Jr., and D. G. Elliot 



Synaptomys coopen Baird, Synaptomys innuitus fTrue\ with its 2 races, Synaplomys borealis (Richardson), with 2 races, 



Synaptomys fatuus Bangs, Synaptomys TDrangcli Merriam, Synaptomys chapmani Allen. 



Synaptomys sphagnicola Preble, Synaptomys andcrsoni Allen, 



559 



